Denny's has recently been recognized by PETA for becoming the first major US diner chain to offer a vegan version of its classic pancake dish. The Plant-Based Pancake Slam includes vegan pancakes made with flaxseeds, cinnamon, and brown sugar, along with crispy hash browns and seasonal fruit. This move towards vegan offerings is seen as a positive step in meeting the growing demand for cruelty-free and cholesterol-free breakfast options.

While Denny's menu has traditionally had limited options for those avoiding animal products, the restaurant chain has started to expand its plant-based offerings. In addition to the Plant-Based Pancake Slam, Denny's now serves Dr. Praeger’s California Veggie Burger at select locations and has other vegan-friendly items such as hash browns, toast, and fries. The restaurant has stated that they are committed to exploring additional plant-based protein options to cater to the dietary preferences of their guests.